[noitemsep,nolistsep]
BLEU [1]} which evaluates n-gram precision (used \(n=2\)  and \(n=4\) ),

chrF character n-gram F-score [2]},

METEOR [3]} which is based on unigram precision and recall as well as stemming and synonymy matching for similarity,

ROUGE [4]} which evaluates n-gram overlap (used \(n=1\)  \(n=2\) ),

ROUGE-L which uses the Longest Common Subsequence statistic,

TER [5]} which is an error rate based on edit distance.

